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Cisco Bug: CSCtb53788 - Chunk memory corruption crash following channel-group config change

Last Modified

Jan 31, 2017

Products (1)

  • Cisco 1700 Series Modular Access Routers

Known Affected Releases


Description (partial)


Chunk memory corruption crash:

*Mar  1 21:49:07 UTC: %SYS-2-CHUNKBADROOTCHUNKPTR: Bad root chunk pointer in chunk header, chunk 0xXXXXXXXX  data 0xXXXXXXXX root chunk ptr 0xXXXXXXXX -Process= "Check heaps", ipl= 0, pid= 4 

chunk_diagnose, code = 4
chunk name is Chain Cache No


Corrupted magic value in chunk's memory block 

%Software-forced reload


This has been seen on a 1700 running IOS version 12.4(25a) when issuing the channel-group command on the VWIC2-2MFT-T1/E1 card.  This may affect more platforms/IOS versions; release note will be updated when more is known concerning the root cause.
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